摘要
通过测量Pt69.9Ni9.6P21.4合金晶体和液体的比热函数和相应的嫡函数，确定了该合金的Kauzmann温度和反Kauzmann温度确定的Kauzmann温度与根据Vogel－Fulcher定律以及根据合金熔点计算的结果一致在测量中，通过采用不同加热速度加热玻璃的方法扩大了过冷液体在玻璃转变温度附近比热的温度测量范围，由此增加了过冷液体的热力学函数的可靠性此外，研究了在晶体样品表面形成氧化膜使晶体过热的可能性。
The Kauzmann temperature and the reverse Kauzmann temperature of thePt69.0Ni9.6P21.4 alloy are determined by use of the measured specific heat functions and thecorresponding entropy functions of the alloy. The obtained Kauzmann temperature is consistent to that calculated by Vogel-Fulcher law and by the melting points of the components ofthe alloy. During the measurements of the specific heat of the undercooled liquid, differentheating rates are utilized to enlarge the measuring temperature range nearby the glass transition temperature. Thus the reliability of the thermodynamic function of the undercooled liquid is increased. The possibility for the overheating of the crystal is studied by producing oxide films on the surface of the crystalline specimen.
出处
《金属学报》
SCIE
EI
CAS
CSCD
北大核心
1997年第6期660-666,共7页
Acta Metallurgica Sinica
基金
国家自然科学基金!59371006
霍英东教育基金!0401038
